If you’re unfamiliar with Godspeed You! Black Emperor, we can’t blame you: not many people are into Canadian orchestral post-rock bands named after obscure documentaries about 1970s Japanese motorcycle gangs (seriously). Especially since they’re not only obscure, but insanely depressing!

But we’re assuming you know “Half-Life 2″, and believe it or not, the combination of these two things is incredibly effective. In fact, the album this track comes off of helped inspire “28 Days Later”, so for a bunch of pretentious Quebecois hipsters, Godspeed has a heck of a lot of nerd cred.

Assembled by a Kotaku reader, who took 100 hours to put it all together using entirely in-game footage, this might be the closest we ever get to a Half-Life movie, and it’s the most affecting mashup we’ve seen in a long, long time. It’s hard to believe the footage was designed around the narration and not vice versa. See for yourself after the jump.